Bluetooth audio devices are recognised but are not available as speakers / headsets. This seems to be a problem with PulseAudio. Since the 20220708 openSUSE Tumbleweed release, new installations use PipeWire as the default audio engine instead of PulseAudio. It is better to use Pipewire instead. PipeWire is available from the main openSUSE repositories as pipewire. It’s installed by default without audio support in openSUSE Leap. In order to enable it and use PipeWire as an audio engine (replacing PulseAudio, which is the default audio engine in Leap) the pipewire-pulseaudio package needs to be installed. To install it use:
zypper in pipewire-pulseaudio
See also openSUSE:Pipewire - openSUSE Wiki